Hello Mehmet On Thu, Aug 06, 2026 at 02:48:16PM +0200, Mehmet Fide wrote: > From: Mehmet Fide <[email protected]> > > Hi, > > a report rather than a patch, because I am not sure which way you want it > solved. > > Colibri VF50/VF61 modules that still carry the Toradex WinCE bootloader > (here: "Toradex Bootloader 1.7 for Vybrid Built May 1 2020") are flashed in > production by handing U-Boot to that loader: > > > flashloader colibri_vf/u-boot-nand.imx > Bootloader image size: 455448 bytes. > Loading done. > Flashing bootloader. > Writing 223 sector(s) of bootloader code from sector 64. > Flashing completed. > > reboot
what if you powercycle the board, instead of doing a reboot? > > With colibri_vf_defconfig as it is today, CONFIG_TEXT_BASE=0x3f401000, the > module then prints nothing at all: no banner, no character, on a console > that works before and after. Building the very same tree with > CONFIG_TEXT_BASE=0x3f408000, the value the Toradex 2015.04 fork used, the > image boots normally and the rest of the flashing flow (NAND partitions, > Linux) completes. > > The difference is only where the image lands in OCRAM: > > 0x3f401000: IVT entry 0x3f401000, image start 0x3f4004e8, len 0x6d000 > 0x3f408000: IVT entry 0x3f408000, image start 0x3f4074e8, len 0x6d000 > > Our reading is that the loader is still resident when it copies the image > in, so an image linked at the start of OCRAM overwrites the code doing the > copy, while 0x3f408000 leaves the low 32 KB alone; we have not proved where > exactly the loader keeps itself, so treat that as a guess. What is measured > is the boot/no-boot difference above, on the same module, same card, same > command, one build apart. > > Booting the same 0x3f408000 image from NAND through the boot ROM works too, > so the older base is not specific to the eBoot path. > > Is the eBoot path still considered supported for these modules, in which > case colibri_vf_defconfig would want to go back to 0x3f408000, or is it > obsolete in favour of recovery mode, in which case it may be worth a note in > doc/board/toradex? I am happy to send either patch. I know very little on this board, eBoot and all the related, but my advise would be the following, U-Boot here should be standalone, and it should be possible to flash it from scratch on the device. I would not focus on whatever you are getting pre-programmed on the board, apart maybe some note in the documentation. Francesco
